SDFUS85DAB01T Kioxia 1.92TB SAS 12GBPS 512e 2.5inch PM6-R Series Hot-plug SSD

Kioxia SDFUS85DAB01T PM6-R Series SSD

The Kioxia SDFUS85DAB01T 1.92TB SAS 12Gbps 512e 2.5-inch PM6-R Series Hot-plug SSD is engineered for enterprise-grade storage solutions, offering exceptional speed, durability, and compatibility for demanding workloads.

Main Information

• Brand Name: Kioxia
• Model Number: SDFUS85DAB01T
• Drive Category: Solid State Drive – Hot-plug

Technical Specifications

Storage Capacity & Memory

• Total Capacity: 1.92TB
• NAND Flash Type: BiCS Flash™ TLC

Form Factor & Interface

• Form Factor: 2.5-inch
• Interface: SAS
• Transfer Speed: 12Gbps

Key Features

• Optimized for read-intensive workloads
• Advanced Format 512e compatibility

Performance Metrics

Sequential Operations

• Read Speed: 4,150 MB/s
• Write Speed: 2,450 MB/s

Random Operations

• Random Read: 595K IOPS
• Random Write: 155K IOPS

Endurance & Reliability

• Minimum Terabytes Written: 14,016 TBW
• Mean Time to Failure: 2,500,000 hours

Expansion & Connectivity

Interface Options

• 1 x SAS 12Gb/s port

Bay Compatibility

• 1 x Hot-plug – 2.5-inch bay

Physical Dimensions

Measurements

• Height: 15 mm (+0, -0.5 mm)
• Width: 69.85 mm (+0.25, -0.25 mm)
• Length: 100.45 mm maximum

Weight

• Maximum Weight: 130 g

Enterprise 1.92TB Read Intensive SAS SSD Category Overview

The enterprise read intensive SAS solid state drive category is designed to address the performance, endurance, reliability, and data integrity requirements of modern data centers, private clouds, and mission-critical server environments. Drives in this category focus on predictable latency, sustained throughput, and long-term stability for workloads where read operations dominate overall I/O patterns. Typical deployments include database acceleration, virtualization platforms, analytics engines, content delivery systems, and enterprise applications that rely on fast data retrieval rather than heavy write activity.

SAS-based SSDs continue to play a strategic role in enterprise storage architectures due to their dual-port capabilities, robust error handling, mature command set, and compatibility with a wide range of RAID controllers and backplanes. Compared to SATA, SAS offers enhanced queue depth, higher reliability standards, and advanced management features that are essential in multi-user, high-availability environments. The read intensive segment of this category is optimized to deliver consistent performance while maintaining cost efficiency and endurance suitable for predominantly read-centric workloads.

Kioxia PM6-R Series Positioning in Enterprise Storage

The Kioxia PM6-R Series represents a specialized class within the enterprise SAS SSD category, targeting read intensive applications that require dependable performance, advanced flash technology, and enterprise-grade firmware. Built on Kioxia’s extensive experience in NAND flash innovation, the PM6-R Series leverages BiCS FLASH 3D TLC architecture to balance capacity, performance, and endurance in a compact 2.5-inch form factor.

As a SAS 12Gbps solution, the PM6-R Series aligns with existing enterprise infrastructure while offering improved performance characteristics over earlier-generation SAS SSDs. This positioning makes it suitable for organizations upgrading legacy storage systems without transitioning entirely to NVMe, while still demanding higher IOPS, lower latency, and greater reliability than traditional hard disk drives.

Read Intensive Workload Optimization

Read intensive SSDs such as the Kioxia PM6-R Series are engineered with firmware and endurance profiles that prioritize read performance and longevity under read-dominant usage. This optimization enables efficient handling of workloads such as search queries, business intelligence reporting, virtual desktop infrastructure boot storms, and frequently accessed datasets. By minimizing write amplification and optimizing garbage collection processes, these drives maintain stable performance over extended operational periods.

The 1.92TB capacity variant fits well into storage tiers where high-capacity read caching and primary read storage are required. It supports scalable deployments where consistent performance across multiple drives is critical to application responsiveness and user experience.

BiCS FLASH 3D TLC Technology Advantages

Kioxia’s BiCS FLASH 3D TLC technology is a cornerstone of the PM6-R Series design. Three-dimensional cell stacking allows for higher density and improved efficiency compared to planar NAND, enabling greater capacity within a standard 2.5-inch enterprise drive. The TLC architecture balances cost effectiveness with endurance and performance suitable for read intensive enterprise workloads.

Advanced flash management algorithms embedded in the controller and firmware work in conjunction with BiCS FLASH to ensure data integrity, wear leveling, and consistent latency. These technologies contribute to predictable performance even as the drive ages, which is a critical requirement for enterprise storage planning and service level agreements.

Endurance Characteristics for Enterprise Use

While read intensive drives are not designed for heavy write workloads, the PM6-R Series provides endurance levels that comfortably support metadata updates, logging operations, and background system writes commonly associated with enterprise applications. This balance ensures that the drive remains reliable throughout its intended service life without unnecessary overprovisioning that would increase cost.

The endurance profile of the 1.92TB model aligns with use cases where reads significantly outnumber writes, such as data warehousing queries, media streaming backends, and application servers that serve static or semi-static content.

SAS 12GBPS Interface and Enterprise Connectivity

The SAS 12Gbps interface is a defining feature of the Kioxia PM6-R Series, providing high bandwidth and enterprise-class connectivity. SAS supports full-duplex communication, enabling simultaneous read and write operations, and offers superior command queuing compared to SATA. This capability allows the drive to maintain performance under multi-threaded access patterns typical in enterprise environments.

Dual-port support enhances availability by allowing redundant paths between the drive and host system. In high-availability storage arrays and clustered server architectures, this feature enables failover and load balancing, reducing the risk of downtime due to path failures.

Compatibility with Existing Enterprise Infrastructure

One of the key advantages of SAS SSDs is their broad compatibility with established enterprise storage ecosystems. The PM6-R Series integrates seamlessly with SAS backplanes, RAID controllers, and storage enclosures commonly found in data centers. This compatibility simplifies deployment and reduces the need for extensive infrastructure changes when upgrading storage performance.

For organizations operating mixed environments of HDDs and SSDs, SAS-based drives allow for consistent management, monitoring, and maintenance processes, preserving operational efficiency.

Advanced Format 512e Sector Architecture

The Advanced Format 512e design of the Kioxia PM6-R Series bridges the gap between modern storage efficiency and legacy system compatibility. By using 4K physical sectors while emulating 512-byte logical sectors, the drive delivers improved error correction and storage efficiency without requiring changes to operating systems or applications that expect 512-byte sectors.

This approach is particularly valuable in enterprise environments where a wide range of operating systems, hypervisors, and applications coexist. Advanced Format technology enhances data integrity and reliability while maintaining seamless integration with existing software stacks.

Impact on Performance and Reliability

Advanced Format sectors improve error detection and correction capabilities, which is essential for maintaining data integrity in large-scale storage deployments. Enhanced ECC reduces the likelihood of uncorrectable errors and contributes to overall system stability. These improvements support long-term reliability, especially in environments with continuous operation and high data access rates.

From a performance perspective, Advanced Format design complements the drive’s controller and firmware optimizations, ensuring efficient handling of read operations and consistent response times.

2.5-Inch Hot-Plug Form Factor Benefits

The 2.5-inch form factor of the Kioxia PM6-R Series is a standard in enterprise servers and storage arrays, offering a balance between capacity density and thermal efficiency. This form factor allows for high drive counts within a compact chassis, supporting scalable storage configurations.

Hot-plug capability enables administrators to replace or upgrade drives without powering down systems, which is critical for maintaining uptime in mission-critical environments. This feature supports non-disruptive maintenance, capacity expansion, and rapid recovery from drive failures.

Thermal and Power Efficiency Considerations

Enterprise SSDs must operate reliably within constrained thermal envelopes. The PM6-R Series is engineered to deliver consistent performance while managing power consumption and heat generation. Efficient power usage contributes to lower operational costs and supports dense server configurations where thermal management is a key concern.

Stable thermal behavior also plays a role in maintaining performance consistency, as excessive heat can lead to throttling and reduced throughput. The drive’s design helps mitigate these risks in continuous operation scenarios.

Data Integrity and Enterprise Reliability Features

Enterprise storage environments demand stringent data integrity and reliability standards. The Kioxia PM6-R Series incorporates multiple layers of protection to safeguard data throughout its lifecycle. These features include robust error correction, power loss protection mechanisms, and end-to-end data path validation.

Power loss protection ensures that in-flight data is preserved in the event of unexpected power interruptions, reducing the risk of data corruption. This capability is essential for enterprise applications where data consistency and integrity are paramount.

Use Cases for Read Intensive Enterprise SSDs

The Kioxia PM6-R Series 1.92TB SAS SSD is well suited for a wide range of enterprise use cases where read performance and reliability are prioritized. Common applications include relational and NoSQL databases with read-heavy query patterns, virtualization environments hosting multiple virtual machines, and content delivery platforms serving frequently accessed data.

In analytics and reporting systems, fast read access to large datasets enables timely insights and improved decision-making. Similarly, in virtual desktop infrastructure deployments, rapid boot times and responsive user sessions are supported by high-performance read intensive storage.

Role in Tiered Storage Architectures

Tiered storage strategies often combine different types of storage media to balance performance and cost. Read intensive SAS SSDs like the PM6-R Series occupy a valuable position between high-end NVMe drives and traditional HDDs. They provide significantly faster access than spinning disks while maintaining cost efficiency for large-capacity deployments.

This positioning allows organizations to allocate high-performance storage to critical workloads while using higher-capacity, lower-cost media for archival or infrequently accessed data.

Integration with Data Center Management Tools

Enterprise SAS SSDs are designed to integrate with standard monitoring and management frameworks. The PM6-R Series supports health monitoring, error reporting, and lifecycle management features that enable proactive maintenance and capacity planning. These capabilities help administrators identify potential issues before they impact performance or availability.

Effective monitoring and management contribute to improved reliability and operational efficiency across large-scale deployments.

Performance Consistency in Mixed Workloads

Although optimized for read intensive scenarios, enterprise environments often involve mixed workloads with varying access patterns. The Kioxia PM6-R Series is engineered to handle these conditions gracefully, maintaining stable read performance even in the presence of background writes and system processes.

This resilience ensures that applications continue to perform reliably during peak usage periods, maintenance operations, and workload fluctuations. Predictable performance under mixed conditions is a hallmark of enterprise-class storage solutions.

Latency Sensitivity and Application Responsiveness

Low and consistent latency is essential for applications that depend on real-time or near-real-time data access. The PM6-R Series delivers latency characteristics suitable for transactional systems, search platforms, and user-facing services where delays can negatively impact user experience.

By reducing storage-induced latency, the drive supports overall system responsiveness and contributes to higher application performance levels.